Honestly I've no idea what it is. It probably is the power thing.
I've sometimes watched Jack to the exclusion of the rest of the game. His organisational skills and communication is phenomenal. He does not shut up, encouraging, cajoling, directing and so on. If he doesn't go on to be an exceptional captain, he's a potential manager.
He'd offer something to our back 4 currently. If you watch him during a game, he never stops gesturing, and speaking with team mates. Even when the rest of the team are celebrating a goal, he's organising others.
In addition to that, he's clearly trying to develop his game. A lot more forward/attacking/incisive passes have been made by Price this season (when he's played).